Dynamic optical information storage or retrieval – Dynamic mechanism optical subsystem – Transducer carriage or actuator
Reexamination Certificate
2005-12-23
2009-06-30
Blouin, Mark (Department: 2627)
Dynamic optical information storage or retrieval
Dynamic mechanism optical subsystem
Transducer carriage or actuator
Reexamination Certificate
active
07555761
ABSTRACT:
An optical pick-up actuator is provided. The optical pick-up actuator includes a lens holder, a tracking coil, a focusing coil, and a magnet. The lens holder holds an objective lens. The tracking coil is wound with wire, is disposed at a central portion on both sides of the lens holder, and includes a horizontal width at a top thereof that is less than a horizontal width at a bottom thereof. The focusing coil is wound with wire, is disposed at a left and a right on both sides of the lens holder, and includes a horizontal width at a top thereof that is greater than a horizontal width at a bottom thereof. The magnet faces the tracking coil and the focusing coil.
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patent: 7210154 (2007-04-01), Song et al.
patent: 2005/0034143 (2005-02-01), Hashimoto
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patent: 2005/0185530 (2005-08-01), Akanuma
patent: 2005/0185533 (2005-08-01), Tanaka
Choi In Ho
Hong Sam Nyol
Kim Jin A
Kim Young Joong
Birch & Stewart Kolasch & Birch, LLP
Blouin Mark
LG Electronics Inc.
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